Tree measurements in the urban environment: insights from traditional and digital field instruments to smartphone applications (original) (raw)

Abstract

Urban forests can provide essential environmental and social functions if properly planned and managed. Tree inventory and measurements are a critical part of assessing and monitoring the size, growth, and health condition of urban trees. In this context, the parameters usually collected are DBH and total height, but additional data about crown dimensions (width, length, and crown projection) are required for a comprehensive tree assessment. These data are generally collected by urban foresters through field surveys using tree caliper or diameter tape for DBH, and the electronic ipsometer/clinometer to measure tree height and crown size. Greater detail could be achieved using a digital instrument as Field-Map, a portable computer station to quickly realize dimensional and topographic surveys of trees and forest stands. Finally, the incorporation of the LIDAR scanner into smartphone, as the iPhone 12 Pro, has made this device able to measure tree attributes, as well as additional spa...

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